blogs Articles

What is Cyanosis Observation Index (COI)?

by UPRtek | 2023/08/08

Introduction - Clinical lighting and Cyanosis Inadequate lighting in medical settings can impede a vital visual diagnosis of the skin, called Cyanosis. So in this article will discuss a crucial...

What is TLA or Temporal Lighting Artifacts?

by UPRtek | 2023/07/19

What is TLA or Temporal Lighting Artifacts? They are mostly visual abnormalities or anomalies caused by pulsating or flickering lights. Most times it’s hardly noticeable but it can have annoying side effects and even cause catastrophic events. Here we talk about the three well-discussed TLA situations

What is a “Spectral” PAR Meter? (vs traditional PAR meter/sensor)

by UPRtek | 2023/07/17

Spectral PAR Meters are making inroads into the Indoor Horticulture market, sharing space with Quantum PAR Meters & Sensors – and growers want to know why. In this article, we compare these devices and detail the distinct advantages of Spectral devices for indoor farming.

How to remote control your MK350D from a smart phone or tablet?

by UPRtek | 2023/03/03

In this article, we show you how to remote control your MK350D spectrometer using a smart phone or a tablet using Bluetooth wireless.

What is TM-30-15 (TM-30-18), and should I use it?

by UPRtek | 2023/01/18

TM-30-15 is a color rendering index system published by IES (Illuminating Engineering Society). A color rendering index system indicates how well a light, when shining on objects, can reproduce the object’s color accurately (compared to a black body radiator – e.g., the sun). TM-30-15 is next in a line of predecessor CRI systems (CIE CRI, GAI, CQS), each intended to improve on previous designs. In this article, we explain TM-30-15, its advantages, and why it’s important.

Automated LED Calibration for Cinema-Stage Light Manufacturing

by UPRtek | 2022/02/09

Cinema LED light manufacturers use what are called “ratio tables” to calibrate their LED lights. This mostly manual process is time consuming, tedious and prone to errors. In this article we will introduce automated LED calibration as a way to speed up calibration many times over and ensure precision color accuracy according to CIE 1931 standards.

What is the difference between a Colorimeter and Spectrometer?

by UPRtek | 2021/11/18

What is the difference between a Colorimeter and Spectrometer? Both devices capture light in order to analyze it’s properties for any number of applications. However, there are some major differences that set them apart. In this article, we will explain the differences by contrasting structural design, functionality, applications, accuracy, advantages and disadvantages.

What is CRI (Color Rendering Index)?

by UPRtek | 2021/06/09

What is CRI (Color Rendering Index)? It is a metric used to measure the ability of a light to bring out colors in objects (i.e. Color Rendering). Lights with a high CRI rating can make store products look brilliant and vibrant. Other lights with low CRI ratings will make the same products drab and lifeless.

What is TLCI, SSI and TLMF?

by UPRtek | 2021/03/02

What is TLCI, SSI and TLMF? They are three metrics used in cinematography to measure a light’s ability to bring out colors (color rendering).

What is Phytochrome Photostationary State (PSS)?

by UPRtek | 2021/02/22

For many plants, sprouting, flowering, fruiting are determined by seasonal variations. Here we look at PSS and Grow Lights and how they achieve the same influence.

Handbook Series

The Grow Light Handbook

Everything thing you need to know to get started on Indoor Farming, PAR meters, and Grow Lights – history, industry, vertical farming, PPFD, types of lights, photosynthesis and more!

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About UPRtek

United Power Research and Technology

UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.

UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.

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What is a "Spectral" PAR Meter

Valentine’s Day is approaching, and you're an anxious indoor rose farmer trying to encourage your buds to bloom in time.

The good news is that researchers have begun to understand the triggering mechanisms for seed germination, flowering, and fruiting, involving grow-light strategies

Now indoor farmers are using this information with “Spectral” PAR meters, measuring grow lights for a light metric PSS (Phytochrome Photostationary State) to trigger photomorphogenesis (i.e., plant transformations caused by light).

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